METREL A 1446, Руководство пользователя

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Flex current clamps A 1446
12
8 Technical specifications
FEATURES NOTES DESCRIPTION
Length of the sensor 90 cm
Measuring range 60 A / 600 A / 6000A ac rms
Overscale 100A / 1000A / 10000 A sinus
Sensitivities 16.7 mV / A; 1.67 mV / A; 0.167 mV / A
Bandwidth 1 10 Hz up to 3 kHz
Accuracy 2,3,4 +/-1 %
Linearity (10 % to 100 %) 2,3,4 +/-0,2 %
Position sensitivity 5 +/-2 % of full scale
Temperature dependency 7 +/-0.02 % of reading / ºC
External fields 6 +/- 1% of full scale
Noise (residual current) 2,4 <4 mV / <1 mV / <1 mV, equivalent to 0.24 A
(range 60 A) / 0.6 A (range 600 A) / 6 A (range
6000 A)
Minimum load impedance in
output 2
10 k

(internal output is 150

)
Phase error <1° @ 50 Hz
<10° @1.5 kHz
Crest factor Up to 2.35
Electrical Security
(
EN 61010)
Double insulation
1000 V- Cat III
- Contamination Deg. 2
Environment Conditions
Sensor : Usage and storage: -20 to 85 ºC
and 15 % to 85 % RH (without condensing)
Module : Usage and storage: -20 to 70 ºC
and 15 % to 85 % RH (without condensing)
Weight of flexible sensor < 350 g
Water and dustproofing
Sensor : IP 64 Module : IP 40
1: Limits of bandwidth corresponding to a relative gain > - 3 dB
2: Reference conditions: 45 Hz – 65 Hz, conductor is in the centre and perpendicular to
the measuring head, temperature between 15 ºC to 25 ºC; 10 k

of load impedance;
laboratory environment electrical noise free.
3: Error of reading in reference conditions.
4: Expression of error measurement in reference conditions
error % = ( I residual / I measured ) x 100 + lin Accuracy
5: Distance between cable and clamp coupling should be

25 mm (1").
6: Adjacent conductor ≥ 20 cm or 8 inch from head. (<40 A/m)
7: No additional error in range 15 ºC – 25ºC,

for higher temperatures: Temp. error = (Temp - 25ºC ) *
Temperature dependency

for lower temperatures: Temp. error = (15ºC - Temp ) *
Temperature dependency